Embossing apparatus



G. SCHAULY E T. AL

EMBOSSING APPARATUS 7 Filed g 11 1923 2 Sheets-Sheet 1 Jan. 6. 5-1,521,970

s. SCHAULY ET AL EMBOSSING APPARATUS Filed Aug. 11 1923 2 Sheets-Sheet 2Mrenfohs:

Patented Jan. 6, 1925.

GEORGES SCEAULY nn Ln'on GERNIGON, or mantras, rnancn, nssrenoas Tor'xon ennmeoiv, or NANTES, nome-rnrnarnnnn, rnancn.

EIv'IBOSSINGr APPARATUS.

Application filed. August 11, 1923.

To all whom it may concern:

Be it known that we, GEORGES SOHAULY and LEON GERNIeoN, citizens of theFrench Republic, residing at Nantes, Loire-Inferieure, France, haveinvented certain Improvements in Embossing Apparatus, of which thefollowing is a specification.

Imitations of embossed printing are produced by spraying an easilyfusible powder over a sheet printed with ordinary ink, the sheet beingthen passed through an oven in which it is heated so as to cause thepowder to fuse and to amalgamate with the ink to form a print having theappearance of being embossed. The ovens usually employed for thispurpose contain a heating element covcred by a baflle plate over whichthe sheets are led by means of an endless travelling apron. Sometimestwo superposed sets of heating elements are employed between which theconveying apron is passed.

The present invention relates to an oven of this kind and its object isto produce a heating zone through which even the most sensitive sheetscan pass without buckling or curling. With this object in view weprovide two heating elements as well as heat distributors composed ofcross-ribbed metal plates arranged with downwardly directed ribs so asto prevent the hot air from circulating under the plates and renderingthe heating irregular, the conveying apron being arranged so as to passthe sheets between the distributors and the upper heating element.

By this arrangement both sides of the sheets will be subjected to aperfectly uni form and equally intense heat so that the sheets can passthrough the oven without buckling or curling and so that the embossingeffect will be uniform over the entire sheet.

Fig. 1 is a general View of this apparatus;

Fig. 2 is a longitudinal section of the same;

Fig. 3 is a plan view;

Fig. 4 is a cross section thereof;

Fig. 5 is a longitudinal section of a modified arrangement, and

Fig. 6 an inverted plan of the heat-distributing plate.

This apparatus is composed of a lower oven 1 and of an upper oven 2 madeof metal Serial No. 656,909.

bodies and preferably provided as shown in Fig. 5, with an outsidecoating 19 of asbestos. Within the lower oven are arranged two rollers 3over which runs an asbestos or all metal conveyor 4 serving to conveysheets 5 through the oven.

Between the two rollers is arranged a sheet iron heat distributor 6having downwardly directed cross-ribs 7.

The conveyor runs over the smooth top of the distributor.

Underneath the distributor is arranged a heating element 8 while asecond heating element 9 is located in the upper oven.

The spindles of the two rollers 8 are provided with sprocket pinions 10connected outside the apparatus by a chain 11 which may advantageously.run on two other pinions 12 and 13 serving to support it.

The rollers may be driven by hand, by a sprocket wheel 14 or by anymotor.

On one of the ends of the apparatus is articulated a plate or tray 15adapted to be sloped according to requirements by means of a rod 16provided with a slot through which passes a set screw. A second tray 17is articulated on the other end of the apparatus.

On the two rollers being rotated either by hand or by a motor the sheetsare taken by the conveyor and conveyed through the oven to be dischargedon tray 17.

The ribs 7 prevent the hot air from circulating under the plate 6 whichwill therefore be maintained in a uniformly heated condition. The sheets5 will also be uniformly heated on both sides and will pass through theoven without buckling o-r curling.

This apparatus may advantageously be set on stands made of refractorymaterial.

A second ribbed plate 18 may be arranged above the plate 6 between thestretches of the apron 8, as shown in Fig. 5.

e claim- 1. An oven for use in the production of embossed printingimitation, comprising a heating chamber, two superposed heating elementsarranged in said chamber, a heat distributor composed of cross-ribbedmetal plates arranged between said heating elements with downwardlydirected ribs, and

an endless travelling apron arranged so as to convey the printing sheetsbetween the upper heating element and the heat distributor.

2. An oven for .use in the production of embossed printing imitations,comprising a heating chamber, two superposed heatingelements arranged insaid chamber, a heat distributor composed of two superposed metal platesarranged between said heating W elements, and an endless travellingapron arranged so as to convey the printing sheets between the upperheating element and the heat distributor.

GEORGES SCHAULY.

LEON GERNIGON.

